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Compare features, prices and ratings to find the perfect phone for you.
Our Verdict
Analysis
Realme GT 6T has the bigger display.
Overall Winner
Realme GT 6T
Display Winner
Realme GT 6T
Performance Winner
Tie
Camera Winner
Tie
Battery Winner
Tie
Value Winner
Tie
Specifications Comparison
| Feature | Realme GT 6T | Xiaomi 15 Ultra |
|---|---|---|
| Display size (in) | 6.78 | 6.73 |
| Charging (W) | 120 | 90 |
| Weight (g) | 191 | 226 |
| Thickness (mm) | 8.70 | 9.35 |
| Chipset | Qualcomm SM7675 Snapdragon 7+ Gen 3 (4 nm) | Snapdragon 8 Elite |
| OS | Android 14, Realme UI 5.0 | Android 15, HyperOS 2 |
Pros & Cons
Realme GT 6T
Xiaomi 15 Ultra
- Outstanding camera versatility
- Fast wired and wireless charging
- Bright display
- Heavy
- Software still polishing animations
- Limited availability in some regions
Every Spec, Side by Side
Specification
Realme
Realme GT 6T
Xiaomi
Xiaomi 15 Ultra
Battery 3 specs
Type
5500 mAh
Market-dependent versions:· Si/C Li-Ion 5410 mAh - Global· Si/C Li-Ion 6000 mAh - China
Charging
120W wired, 50% in 10 min
90W wired, 80W wireless
Capacity
—
5410 mAh
Body 5 specs
Dimensions
162 x 75.1 x 8.7 mm (6.38 x 2.96 x 0.34 in)
161.3 x 75.3 x 9.35 mm
Weight
191 g (6.74 oz)
226 g
Build
Glass front (Gorilla Glass Victus 2), plastic frame, plastic back
Glass front, glass-fiber reinforced plastic back or silicone polymer back (eco leather), aluminum frame
SIM
Nano-SIM + Nano-SIM
· Nano-SIM + Nano-SIM· Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)
IP65 dust tight and water resistant (low pressure water jets)*
* market/region dependent availability
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min)
Aerospace-grade glass fiber
Connectivity 8 specs
WLAN
Wi-Fi 802.11 a/b/g/n/ac/6, dual-band
Wi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band or tri-band, Wi-Fi Direct
Bluetooth
5.4, A2DP, LE
6.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5
Positioning
GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC, GLONASS
GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASS
NFC
Yes
Yes
Infrared port
Yes
Yes
Radio
No
No
USB
USB Type-C 2.0
USB Type-C 3.2 Gen 2, DisplayPort, OTG
5G
—
Yes
Display 4 specs
Type
LTPO AMOLED, 1B colors, 120Hz, HDR, 1000 nits (typ), 1600 nits (HBM), 6000 nits (peak)
LTPO AMOLED
Size
6.78 inches, 111.7 cm2 (~91.8% screen-to-body ratio)
6.73 inches
Resolution
1264 x 2780 pixels (~450 ppi density)
1440 x 3200 pixels
Protection
Corning Gorilla Glass Victus 2
Xiaomi Shield Glass 2.0, Mohs level 6
Features 2 specs
Sensors
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer
—
Two-way satellite communication (China model only)
Launch 2 specs
Announced
2024, May 22
2025, February 27
Status
Available. Released 2024, May 28
Available. Released 2025, February 27
Main Camera 4 specs
Dual
50 MP, f/1.9, 26mm (wide), 1/1.95", 0.7µm, PDAF, OIS
8 MP, f/2.2, 16mm, 112˚ (ultrawide), 1/4.0", 1.12µm
—
Features
Color spectrum sensor, Dual-LED flash, HDR, panorama
Laser AF, color spectrum sensor, Leica lenses, Dual-LED flash, HDR, panorama, 67mm filter ring holder (optional)
Video
4K@30/60fps, 1080p@30/60/120fps, gyro-EIS, OIS
8K@30fps, 4K@30/60/120fps, 1080p@30/60/120/240/480/960/1920fps, gyro-EIS, Dolby Vision HDR 10-bit rec. (4K@60fps, 1080p)
Quad
—
50 MP + 50 MP + 200 MP + 50 MP
Memory 5 specs
Card slot
No
No
Internal
128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM
256GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
UFS 3.1 - 128GB
UFS 4.0 - 256/512GB
UFS 4.1
RAM
—
16GB
Storage
—
512GB
Misc 4 specs
Colors
Fluid Silver, Razor Green
Black, White, Silver Chrome, Green
Models
RMX3853
25010PN30G
Price
£ 305.40 / € 349.99 / ₹ 27,999
$ 693.75 / £ 1,295.00 / € 812.34
SAR EU
—
1.00 W/kg (head) 1.00 W/kg (body)
Network 7 specs
Technology
GSM / HSPA / LTE / 5G
GSM / HSPA / LTE / 5G
2G bands
GSM 850 / 900 / 1800 / 1900
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 38, 39, 40, 41, 66
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 42, 48, 66, 71 - International
5G bands
1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA
1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 48, 66, 71, 75, 77, 78, 79 SA/NSA - International
Speed
HSPA, LTE, 5G
HSPA, LTE, 5G
—
1, 2, 3, 5, 7, 8, 12, 20, 26, 28, 38, 40, 41, 48, 66, 77, 78, 79, 80, 81, 83, 84, 89 SA/NSA - China
Our Tests 4 specs
Performance
AnTuTu: 1114911 (v9), 1413668 (v10)
GeekBench: 3845 (v5), 4648 (v6)
—
Display
1046 nits max brightness (measured)
—
Loudspeaker
-24.1 LUFS (Very good)
-24.1 LUFS (Very good)
Battery
Active use score 15:01h
Active use score 16:13h
Platform 4 specs
OS
Android 14, Realme UI 5.0
Android 15, HyperOS 2
Chipset
Qualcomm SM7675 Snapdragon 7+ Gen 3 (4 nm)
Snapdragon 8 Elite
CPU
Octa-core (1x2.8 GHz Cortex-X4 & 4x2.6 GHz Cortex-A720 & 3x1.9 GHz Cortex-A520)
Octa-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
GPU
Adreno 732
Adreno 830
Selfie Camera 3 specs
Single
32 MP, f/2.5, 21mm (wide), 1/2.74", 0.8µm
32 MP
Features
Panorama
HDR, panorama
Video
4K@30fps, 1080p@30fps, gyro-EIS
4K@30/60fps, 1080p@30/60fps, gyro-EIS
Sound 3 specs
Loudspeaker
Yes, with stereo speakers
Yes, with stereo speakers
3.5mm jack
No
No
24-bit/192kHz Hi-Res audio
24-bit/192kHz Hi-Res & Hi-Res Wireless audio
Qualcomm XPAN (24-bit/96kHz audio)
Eu Label 4 specs
Energy
—
Class A
Battery
—
58:58h endurance, 1000 cycles
Free fall
—
Class C (90 falls)
Repairability
—
Class C
Similar Comparisons
Common Questions
Which phone is the best in this comparison?
Realme GT 6T has the bigger display.
How are the comparison winners decided?
We compare measurable specs (display size, battery capacity, RAM, charging, weight) and price (USD). When two phones tie or data is missing we mark the category "Depends".
Which is more affordable?
The cheaper option is shown as the value winner above. Prices are USD and may vary by region or retailer.